Liquid dispensing apparatus



Nov. 26, 1935. J. c. wooDFoRD LIQUID DISPENSING APPARATUS 2SheetsFSheei; l

Filed June 4, 1951 NGI NOV.. 26, 1935. lQ C, WOQDFORD 2,022,629

LIQUID DISPENSING APPARATUS Filed Jun 4, 1931 2 sheets-sheet 2 dose-PH CWvofmo/ Patented Nov. 26, 1935- UNITED STATES ram' ortica LIQUIDDISPENSING APPARATUS Application June 4, 193i, serial No. 54i,994`

, 2 Claims.

My invention relates to apparatus which may be advantageously employedin dispensing gas-I olene from a flexible' hose having one end connectedwith a. stationary pump stand and having its free end provided with anozzle including a manually operative valve controlling the dispensationof liquid therethrough; said hose having means adjacent to said standoperatively connecting said hose with an electric'switch inthe stand forcontrolling the circuit of an electric motor for operating a pump tosupply theliquid for discharge through` the hose.

As hereinafter described, mere bending movement of the hose away fromthe stand, by the operator manipulating the hose to dispense liquidtherethrough, sufiices to close said electric switch to start andmaintain the operation of the pump motor. Suchclosing movement of theswitch is effected against the stress of a spring which normally tendsto open said switch and stop the motor. Such operation is terminatedwhen the operator releases the hose, permitting it to swing back to itsnormal position; such release permitting the switch to be opened by saidspring.

In the form of my invention chosen for illustration the motorcontrolling mechanism which is in cooperative relation with the hose asabove indicated is also in `cooperative relation `with a hose supportwhich is pivoted in the pump stand and projects' exterior thereto and isadapted to support the hose in idle position by engagement with the hosenozzle; said hose support and nozzle being so correlated that they maybe locked together in idle position and, when thus locked, the motorcontrolling mechanism is rendered inoperative by its connection with thehose. That construction and arrangement is advantageous in that itprevents accidental or mischievous manipulation of the hose to operatethe motor when the hose nozzle is in such idle position. I-Iowever, whenthe nozzle is released from said support, the controlling mechanism isfreed to be operated by its connection aforesaid with the hose.Therefore, simpler embodiments of my invention may be made including thehose operable without correlation (Cl. 22l-95i `taken on the line II,II, in Fig. I, but on a larger scale.

Fig. III is a fragmentary vertical sectional view taken on the line IIIin Fig. II, on the same scale as the latter. 5

Fig. IV is an elevation of the right hand side of certain of the partsof the controlling mechanism as shown in Fig. IIIIZ` and on the samescale.

In said figures; the pump stand `includes the base I, casing 2, platform3, center frame l, casing 5, and domes.

The liquid to be pumped is withdrawn from a subjacent tank through thepipe 8, the screen casing 9, and the pipe' Ill to the rotary pump Ilwhich has its casing rigidly connected with the lower side of saidplatform 3. The rotor I2 of said pump is provided with the pulley I3adapted to be driven by the belt I4 extending around the. pulley I5 onthe armature shaft I6 of the electric motor I1. 2o

Said pump I l is adapted to' discharge the liquid through the pipe I9,thevmeter 20, and the pipe 2| into the sight gage 22 from-which itgravitates through the pipe 23 into the exible dispensing hose 24. Saidhose has, at 4its free end, the nozzle 25 25 containing the valve 26which is normally closed by a spring. Said valve has the stem extendingthrough the stuiilng box 3l in said nozzle 25, adapted to be operated bythelever 3 4 which is fulcrumed at in the nozzle -frame 36. 30 Saidiiexible hose 2B is provided with the band 38, conveniently formed oftwo oppositely counterpart semicylindrical sections hingedly connectedby the pintle 39 at one side of the hose and clamped upon the latter byscrews 40 at the 35. opposite side of the hose. Said pintle 39 ispivotally connected with the flexible connector All, conveniently a fiatlink chain. Said chain is pivotally connected, by the screw 43, at itsother end, with'the long arm 44 of the bell crank lever 40 having theshort arm 65. Saidlever is fulcrumed en the pin 86 in the lever bracketd1 which is rigidly connected with the innerface of said' casing 5,conveniently by the three screws 9. Said screws 49 are in screw threadedengage ent with 45 said bracket 41 but extend through smooth holes inthe roller bracket 5I which they rigidly secure upon the outer face ofsaid casing 5. 4Said bracket 5I supports the two rollershafts 52uponwhich are respectively journaled the two rollers 53, upon 30opposite sides of said ilexible connector 4I which they guide, so as topermit said hose 24 to be pulled in any direction within an arc of onehundred and eighty degrees, to draw said ilexiblev connector 4I betweensaid rollers with a mini- 55 mum amount of friction, said rollersserving as anti-friction bearings.

As shown in Figs. II and IV, the short arm 45 of said bell crank leverhas the cylindrical stud 55 overhanging the collar 56 which isadjustably rigidly connected with the vertical slide rod 51,conveniently by the set screws 58. Said rod is mounted to reciprocate inthe bearing 59 in said platform 3 and in the bearing lug 60 on saidbracket 41. Said rod 51 is continually stressed upwardly against saidlug 55 on the bell crank lever arm 45 to pull the flexible connector 4|and hose 24 to the position shown in Fig. III, by the spring 6| whichencircles said rod between said platform 3 and the collar 62 which isadjustably rigidly connected with said rod, conveniently by the, two setscrews 63.

Said slide rod 51 carries the bifurcated arm 65 which is adjustablyrigidlyl secured thereon by the set screws 66 shown in Fig. III, so asto embrace, in the slot 61, between its bifurcations, the plunger 68which is mounted to reciprocate in the bearing 69 of the switch casing10 which contains a switch of any suitable type, indicated at 1| in Fig.III, operable by said plunger to control the circuit including theconductors 13 and 14 of said motor I1. Electrical energy is supplied tosaid motor through the conductors 15 and 16 which are convenientlyextended-to said switch box 16 through the conduit 11 which isstationary in said pump stand. In the position shown; the switch plunger68 is at the upper range of its movement and the motor circuit broken.Said circuit is closed by downward movement of said plunger; effected bythe operator pulling the hose away from the stand as above contemplated.The operator holds the hose 24 in such bent position during the timewhen it is desired that said motor I1 shall be operated to dispenseliquid through said hose.

It is to be particularly noted that, in comparison with devices of theprior art in which a rigid connector extends from the hose to the meansfor controlling the iiow of liquid through the hose; the connector 4|,which is flexible in any direction at the hose and at the wall of thecasing, affords at least two distinct advantages,

to wit, first, the maximum range of lateral movement of both the hoseand its connection Withthe controlling means is afforded with theminimum of projection thereof through the Wall of the casing containingthe pump and, second, it is irnpossible to disable the connection bylateral movement thereof, whereas, with the rigid connections aforesaid,the range of lateral movement of the hose is materially limited and ifthe hose be accidentally forced aside from the plane in which the rigidconnection is designed to move, the latter is distorted and disabled.

Electrical conductors 19 and 80 may be extended through the conduit 6|from the conductors 15 and 16 and in multiple relation with thev motorcircuit, to energize an electric lamp 62 in said dome 6.

As shown in Figs. II and IV; the upper end 84 of said slide rod 51 isbent at right angles therevto and fitted through the slot 85 in the arm86 of the hose supporting lever 81 which is fulcrumed on the shaft 88 inthe bracket 89. Said bracket 89 has the outer face plate 90, rigidlyconnected with the outer face of the pump stand casing 5, convenientlyby the screws 9|. Said lever 81 has the upwardly extending lockingflange 93, intermediate of'its width, adapted to project upwardlythrough a slot in said'nozzle frame 36, and having the hole 94 throughwhich the staple of a padlock 95 may be' extended to hold said nozzleupright with the discharge end 96 thereof projecting through the slot 91in said casing 5, as indicated in dotted lines in Fig. I; in whichposition the nozzle serves to bracesaid lever 81 against upward movementand thus prevent accidental or malicious operation of the electricswitch 1| by pulling the hose 24 when thus'locked in idle position. l()

It may be observed that the slot 85 in the arm 86 of the hose supportinglever 81 is of such extent that said lever may be idly upturned to the`limit of its movement, stopped by contact of said flange 93 against theflange 98 on said plate 90. Howi5 ever, `when said lever 81 is releasedby removal of said nozzle; it is free to be moved from the positionshown in Fig. III to the upper limit of its movement by pulling the hose24 away from the stand and thereby turning said bell crank 20 lever arm45 downward, as above described, to depress said slide rod 51 againstthe stress of said spring 6| which latter continually tends to restorethe switch controlling mechanism to the idle position shown in Fig. III,in which the motor circuit 25 is broken.

However, as above indicated, my invention may be simplified by omittingthe parts which cooperatively connect the motor switch controlling`devices with the means for supporting the hose, 30 and the hose beotherwise supported than by the lever 81.

Moreover, it is to be understood that the exible connector 4| may beoperatively connected with the motor controlling switch, by means otherthan 35 above described.

Therefore, I do not desire to limit myself to the precise details ofconstruction, arrangement, and method of operation herein set forth, asit is obvious that various modifications may be made 40 therein withoutdeparting from the essential features of my invention, as dened in theappended claims.

I claim:

1. In liquid dispensing apparatus; the combination with a flexible hose;of a fixed support for one end of said hose; said support having anopening therethrough; a roller bearing plate on the outer face of saidsupport in registry with said opening; a lever bearing plate on theinner face of said support in registry with said opening; fasteningmeans extending through said support and both of said plates, forholding them in rigid relation; a pair of rollers journaled in 55 saidroller bearing plate upon respectively opposite sides of said opening; alever fulcrumed on said lever bearing plate in registry with saidopening; a clamp band encircling said hose in registry with saidopening; an electric switch 60 operatively connected with said lever;means continually stressing said switch toward one extreme of itsmovement; andv a flexible connector pivotally connected at one end tosaid lever and connected at its opposite end to said band; wherebybending movement of said hose tilts said lever and operates said switchin one direction and release of said hose permits said lever to beautomatically returned to its initial position.

2. In liquid dispensing apparatus; the combivnation with a stationarypump stand having an motor in said stand, operatively connected withsaid pump; a liquid discharge conduit in com-v munication with said pumpand including a ilexible hose having one end held stationary at saidpump stand; a nozzle valve at the free end of said hose; an electricswitch in said stand, adapted to control the energizing circuit of saidmotor. and including a recirocatory plunger; means cooperativelyconnecting said exible hose with said switch, including a flexibleconnector extending through said opening between said rollers and havingone end connected with said hose; a bell crank lever Iulcrumed in saidstand and attached to the other end of said ilexlble connector; a sliderod mounted to reciprocate in said stand, parallel with said switchplunger; means on said rod in cooperative relation with said bell crank40i said pump, when the dispensation of liquid through said hose be 15lever; an arm carried by said rod in cooperative relation with saidplunger; and a spring in cooperative relation with said rod, arranged tostress the latter to open said switch; whereby, said ilexible connectoris mounted for reciprocatlon. 5 through the sidewall of said pump standand may be pulled outwardly by the operator ilexing said hose in anydirection away from said stand to eil'ect a dispensing operation,against the stress of said spring, and said switch be closed and said 10pump operated while .said hose is held in dispensing position, and saidswitch be automatically opened, by said spring, to terminate theoperation said hose is released; and

manually controlled at said nozzle valve: v JOSEPH C. WOODFORD.

